CVE-2026-14066: Chrome iOS Navigation Bypass Vulnerability – Patch Guide

Technical summary

CVE-2026-14066 is an input validation flaw (CWE-20) in Chrome for iOS versions prior to 150.0.7871.47. The vulnerability stems from insufficient validation of untrusted input in the browser's navigation logic. An unauthenticated remote attacker can craft a malicious HTML page that, when rendered by the vulnerable browser, bypasses intended navigation restrictions. The Chromium project classified this as low severity from a platform perspective, though the CVSS 3.1 score of 4.3 (MEDIUM) reflects the integrity impact and network-based attack vector. No confidentiality or availability impact is expected.

Business impact

End users running vulnerable versions of Chrome on iOS devices are at risk of being redirected or navigated to unintended destinations against the browser's security model. While this does not directly compromise user data or device availability, it could facilitate phishing, credential harvesting, or distribution of misleading content if attackers exploit the navigation bypass to direct users to spoofed or malicious sites. Organizations should consider the cumulative risk when users access sensitive internal resources or authentication portals from iOS devices.

Affected systems

Apple iPhone OS devices running Google Chrome versions prior to 150.0.7871.47 are affected. Desktop versions of Google Chrome and Chrome on other platforms are not impacted by this specific vulnerability. Organizations should verify the Chrome version on corporate-managed iOS devices and any bring-your-own-device (BYOD) iOS endpoints that run Chrome.

Exploitability

Exploiting this vulnerability requires a user to visit a malicious or attacker-controlled webpage. There is no remote code execution, no privilege escalation path, and no way to exploit this without user interaction. The attack surface is limited to scenarios where users visit untrusted sites or click attacker-supplied links. The ease of weaponization is moderate—an attacker must craft a specific HTML page and convince a user to visit it. Given the lack of CISA KEV listing and the low Chromium severity rating, active exploitation in the wild is not currently documented, though the attack pattern is straightforward enough that opportunistic exploitation is plausible.

Remediation

Update Google Chrome for iOS to version 150.0.7871.47 or later. Users should enable automatic updates in the App Store settings to receive patches promptly. For organizations managing iOS devices via Mobile Device Management (MDM) solutions, deploy the patched Chrome version through your MDM console. Verify that no custom policies are preventing Chrome updates. Users and administrators should also review browser security settings and educate users about the risks of visiting untrusted or suspicious webpages.

Patch guidance

Google has patched this vulnerability in Chrome for iOS 150.0.7871.47. Verify this version number in the official Google Chrome release notes before deploying. iPhone and iPad users should visit the App Store and check for available Chrome updates, or enable automatic updates in their device settings. Enterprise administrators using MDM can push the patched version to enrolled iOS devices. There are no interim workarounds; updating is the only mitigation. Test the patched version in a pilot group before organization-wide rollout if you have custom Chrome configurations or policies.

Detection guidance

Monitor for Chrome version compliance on iOS devices using your MDM or mobile security tools. Alert when Chrome for iOS versions older than 150.0.7871.47 are detected. From a network perspective, there is no definitive signature for exploitation attempts, as the attack relies on user browsing behavior and social engineering. Focus detection efforts on monitoring for unusual navigation patterns or redirect loops in proxy/firewall logs if applicable. User awareness training is more valuable than network-based detection in this case, as it encourages users to recognize and avoid suspicious links.

Why prioritize this

While assigned a MEDIUM CVSS score and listed as low severity by Chromium, this vulnerability should be prioritized for patching due to the low barrier to exploitation and the widespread use of Chrome on iOS. The vulnerability is not in the KEV catalog and shows no signs of active exploitation, reducing immediate urgency compared to critical flaws. However, the navigation bypass could facilitate social engineering attacks and phishing campaigns targeting iOS users. Organizations with significant BYOD iOS adoption or high-risk user populations should accelerate patching; others can follow standard patch management windows.

Risk score, explained

The CVSS 3.1 score of 4.3 reflects a network-based attack vector (AV:N), low attack complexity (AC:L), no privilege requirements (PR:N), and a requirement for user interaction (UI:R). The score is elevated to MEDIUM because there is an integrity impact (I:L)—the ability to bypass navigation restrictions could lead to users being directed to unintended destinations. There is no confidentiality impact (C:N) or availability impact (A:N), which keeps the score relatively low. The low Chromium severity classification and absence from CISA's KEV list indicate that the vendor and threat community view this as a manageable risk, suitable for standard patch cycles rather than emergency response.

Frequently asked questions